121 lines
2.3 KiB
C
121 lines
2.3 KiB
C
/*
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* Update physical addresses of boot services
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*/
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#include <sys/param.h>
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#include <err.h>
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#include <fcntl.h>
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#include <gelf.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sysexits.h>
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#include <unistd.h>
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#include <getopt.h>
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#define BOOTPROG_LOAD_START 0x05000000ULL
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int nflag = 0;
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int stack_kbytes[] = {
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/* ds rs pm sched vfs memory log tty mfs vm pfs init */
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16, 8125, 32, 32, 16, 8, 32, 16, 128, 128, 128, 64
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};
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static void usage(void);
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GElf_Addr
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update_paddr(int nr, char *fname, GElf_Addr startaddr)
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{
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int i, fd;
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Elf *e;
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size_t n;
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GElf_Phdr phdr;
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GElf_Addr endaddr = 0;
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if ((fd = open(fname, O_RDWR, 0)) < 0)
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err(EX_NOINPUT, "open \"%s\" failed", fname);
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if ((e = elf_begin(fd, ELF_C_RDWR, NULL)) == NULL)
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errx(EX_SOFTWARE, "elf_begin() failed: %s.", elf_errmsg(-1));
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if (elf_kind(e) != ELF_K_ELF)
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errx(EX_DATAERR, "\"%s\" is not an ELF object.", fname);
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if (elf_getphdrnum(e, &n) != 0)
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errx(EX_DATAERR, "elf_getphdrnum() failed: %s.", elf_errmsg(-1));
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for (i = 0; i < n; i++) {
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if (gelf_getphdr(e, i, &phdr) != &phdr)
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errx(EX_SOFTWARE, "getphdr() failed: %s.",
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elf_errmsg(-1));
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if (phdr.p_type == PT_LOAD) {
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phdr.p_paddr = startaddr + phdr.p_vaddr;
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endaddr = round_page(phdr.p_paddr + phdr.p_memsz)
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+ round_page(stack_kbytes[nr] * 1024);
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if (gelf_update_phdr(e, i, &phdr) < 0)
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errx(EX_SOFTWARE,
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"gelf_update_phdr failed: %s.",
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elf_errmsg(-1));
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}
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}
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if (elf_update(e, ELF_C_WRITE) < 0)
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errx(EX_SOFTWARE, "elf_update failed: %s.", elf_errmsg(-1));
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(void) elf_end(e);
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(void) close(fd);
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return endaddr;
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}
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int
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main(int argc, char **argv)
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{
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int i, ch;
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GElf_Addr startaddr, endaddr;
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startaddr = BOOTPROG_LOAD_START;
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while ((ch = getopt(argc, argv, "n")) != -1) {
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switch (ch) {
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case 'n':
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nflag = 1;
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break;
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case '?':
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default:
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usage();
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exit(EX_USAGE);
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}
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}
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argc -= optind;
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argv += optind;
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if (argc < 1)
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usage();
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if (elf_version(EV_CURRENT) == EV_NONE)
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errx(EX_SOFTWARE, "ELF library intialization failed: %s",
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elf_errmsg(-1));
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startaddr = BOOTPROG_LOAD_START;
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for (i = 0; i < argc; i++) {
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startaddr = update_paddr(i, argv[i], startaddr);
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}
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exit(EX_OK);
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}
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static void
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usage(void)
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{
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(void) fprintf(stderr, "usage: %s [-n] elf1 elf2...\n", getprogname());
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}
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